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Pervasive Arctic lead pollution suggests substantial growth in medieval silver production modulated by plague, climate, and conflict 期刊论文
PROCEEDINGS OF THE NATIONAL ACADEMY OF SCIENCES OF THE UNITED STATES OF AMERICA, 2019, 116 (30) : 14910-14915
作者:  McConnell, Joseph R.;  Chellman, Nathan J.;  Wilson, Andrew I.;  Stohl, Andreas;  Arienzo, Monica M.;  Eckhardt, Sabine;  Fritzsche, Diedrich;  Kipfstuhl, Sepp;  Opel, Thomas;  Place, Philip F.;  Steffensen, Jorgen Peder
收藏  |  浏览/下载：7/0  |  提交时间：2019/11/27
ice core  lead pollution  Arctic  plague  Middle Ages  
Precise timing of abrupt increase in dust activity in the Middle East coincident with 4.2 ka social change 期刊论文
PROCEEDINGS OF THE NATIONAL ACADEMY OF SCIENCES OF THE UNITED STATES OF AMERICA, 2019, 116 (1) : 67-72
作者:  Carolin, Stacy A.;  Walker, Richard T.;  Day, Christopher C.;  Ersek, Vasile;  Sloan, R. Alastair;  Dee, Michael W.;  Talebian, Morteza;  Henderson, Gideon M.
收藏  |  浏览/下载：9/0  |  提交时间：2019/11/27
4.2 ka event  stalagmite  drought  Mesopotamia  dust  
Secondary magnetite in ancient zircon precludes analysis of a Hadean geodynamo 期刊论文
PROCEEDINGS OF THE NATIONAL ACADEMY OF SCIENCES OF THE UNITED STATES OF AMERICA, 2019, 116 (2) : 407-412
作者:  Tang, Fengzai;  Taylor, Richard J. M.;  Einsle, Josh F.;  Borlina, Caue S.;  Fu, Roger R.;  Weiss, Benjamin P.;  Williams, Helen M.;  Williams, Wyn;  Nagy, Lesleis;  Midgley, Paul A.;  Lima, Eduardo A.;  Bell, Elizabeth A.;  Harrison, T. Mark;  Alexander, Ellen W.;  Harrison, Richard J.
收藏  |  浏览/下载：7/0  |  提交时间：2019/11/27
Hadean  paleomagnetism  Jack Hills  zircon  correlative microscopy  
A 40-y record reveals gradual Antarctic sea ice increases followed by decreases at rates far exceeding the rates seen in the Arctic 期刊论文
PROCEEDINGS OF THE NATIONAL ACADEMY OF SCIENCES OF THE UNITED STATES OF AMERICA, 2019, 116 (29) : 14414-14423
作者:  Parkinson, Claire L.
收藏  |  浏览/下载：2/0  |  提交时间：2019/11/27
sea ice  climate change  satellite Earth observations  climate trends  Antarctic sea ice  
A diurnal carbon engine explains 13C-enriched carbonates without increasing the global production of oxygen 期刊论文
PROCEEDINGS OF THE NATIONAL ACADEMY OF SCIENCES OF THE UNITED STATES OF AMERICA, 2019
作者:  Emily C. Geyman and Adam C. Maloof
收藏  |  浏览/下载：4/0  |  提交时间：2019/11/27
carbonates  carbon isotopes  chemostratigraphy  paleoclimate  
Rivers across the Siberian Arctic unearth the patterns of carbon release from thawing permafrost 期刊论文
PROCEEDINGS OF THE NATIONAL ACADEMY OF SCIENCES OF THE UNITED STATES OF AMERICA, 2019, 116 (21) : 10280-10285
作者:  Wild, Birgit;  Andersson, August;  Broder, Lisa;  Vonk, Jorien;  Hugelius, Gustaf;  McClelland, James W.;  Song, Wenjun;  Raymond, Peter A.;  Gustafsson, Orjan
收藏  |  浏览/下载：6/0  |  提交时间：2019/11/27
carbon cycle  climate change  radiocarbon  peat  leaching